anonymous
  • anonymous
What is the value of expression? 6−7 • 64 A. 6−3 B. 6−11 C. 6−28 D. 611
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
D. because value just means the answer
anonymous
  • anonymous
i have 4 more questions care to help me?
anonymous
  • anonymous
sure

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texaschic101
  • texaschic101
is there an exponent in the first problem ?
anonymous
  • anonymous
yes
texaschic101
  • texaschic101
or is it just 6 - 7 * 64 ??
anonymous
  • anonymous
yes
anonymous
  • anonymous
its 7
texaschic101
  • texaschic101
is it 7 or -7 ?
anonymous
  • anonymous
-7
texaschic101
  • texaschic101
6^-7 * 64 = 1/6^7 * 64 = 1/279936 * 64 = 64/279936 = ....... wait....is the problem 6^-7 * 6^4 ??
anonymous
  • anonymous
6-^7 the 7 is higher i think the power and also 6-^4
anonymous
  • anonymous
What is the value of expression? 6−7 • 64
texaschic101
  • texaschic101
x^m * x^n = x^(m + n) 6^-7 * 6^4 = 6^(-7 + 4) = 6^-3
anonymous
  • anonymous
so its a
texaschic101
  • texaschic101
but if it is : 6^-7 * 6^-4, then it is 6^(-7-4) = 6^-11
texaschic101
  • texaschic101
is the exponent 4 positive or negative
anonymous
  • anonymous
can u help me with a few more?
texaschic101
  • texaschic101
possibly....not the best at exponents
anonymous
  • anonymous
that's whjy im here XD
anonymous
  • anonymous
why A. 7 B. 3 C. −3 D. −7
texaschic101
  • texaschic101
what ??
anonymous
  • anonymous
What is the missing value? A. 7 B. 3 C. −3 D. −7
texaschic101
  • texaschic101
the missing value in what ?
anonymous
  • anonymous
|dw:1444142734420:dw|
texaschic101
  • texaschic101
when dividing exponents with the same base, you subtract the exponents. x^m/x^n = x^(m-n) so... 7^3/7^5 = 7^(3 - 5) = 7^-2...answer is B
anonymous
  • anonymous
i don't understand any of this XD
texaschic101
  • texaschic101
exponents have their own rules...it can be quite confusing
texaschic101
  • texaschic101
do you have anymore questions ?
anonymous
  • anonymous
What is the missing exponent?|dw:1444143182285:dw|
anonymous
  • anonymous
yes and i need to work on my drawing
texaschic101
  • texaschic101
(x^m)^n = x^(mn) so.. (6^5)^-4 = 6^(5*-4) = 6^-20 that was 6^-20 right ?? Or is it 6^20 ??
anonymous
  • anonymous
6^20
texaschic101
  • texaschic101
wait...hold on...then my answer is wrong (6^-5)-4 = 6^(-5 * -4) = 6^20 answer is 6^-5
anonymous
  • anonymous
one more question >.<
texaschic101
  • texaschic101
I am ready..lol
anonymous
  • anonymous
|dw:1444143656111:dw|
texaschic101
  • texaschic101
(7^-3 * 7^9) / 7^-8 = ( 7^(-3 + 9) / 7^-8 = 7^6/7^-8 = 7^(6 -(-8) = 7^ (6 + 8) = 7^14
anonymous
  • anonymous
thank you 100
texaschic101
  • texaschic101
sweet...its just a matter of following the exponent rules. I wish you luck with all this :)
anonymous
  • anonymous
x.x i'll need more than luck for this cya

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